fre. e points & brainliest. and while youre at it report atleast some of my questions that ive asked (i think the first 3 infront of this one have been reported already)

Which of the following best describes a basic postulate of euclidean geometry? a. all straight line segments have a midpoint. b. any straight line segment can be extended indefinitely. c. all right angles are formed from perpendicular segments. d. any two right angles are supplementary.